Casey Kasem, Host of ‘American Top 40 Countdown’, Remembered By Fans

Casey Kasem, host of ”American Top 40 Countdown” and the voice of Shaggy on “Scooby-Doo, Where Are You!,” died Sunday at age 82. His signature sign-off urged millions of listeners to “keep your feet on the ground and keep reaching for the stars.”

Fans of Mr. Kasem turned to Twitter to express their sympathies and memories and spoke of the influence he had in their lives.